Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1867426 | Physics Letters A | 2010 | 5 Pages |
Abstract
The local density of state (LDOS) has been studied by solving the mean-field Bogoliubov–de Gennes equations based on a model Hamiltonian with competing antiferromagnetic (AF) and d-wave superconducting orderings in the presence of a long-range Coulomb interaction. The vortex-core state with energies slightly above and below the Fermi level shows a four-fold symmetry with two-dimensional modulations under small on-site repulsion strength U, whereas it has a stripe structure for large U . The four-fold symmetry modulation with a periodicity of 4a04a0 is recovered as a long-range Coulomb interaction has been included. Recent scanning-tunneling-microscopy experiments may be understood in terms of the present results.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Hong-Wei Zhao, Hao Meng, Ling-feng Zhang, Lin Wen, Liang-ma Shi, Guo-Qiao Zha, Shi-Ping Zhou,